Lates firmware update 9.75 problems, keeps restarting.

I had to find an old version of the firmware in zip file format to install manually. After installation I uploaded and problem was solved. 

Is there a possibility to get and install firmware without download manager apps like Garmin express, a case like this probably was of a corrupted file update.

I prefer manual installation when problems occur. Had to remove and overwrite the new firmware to get things working.

Appreciate your help